I have just purchased an R6 Mk II with the Canon lens adapter. The whole thing works fine with my old EF 20mm f/2.8 USM, EFS 17-85mm f/4-5.6 IS USM, EF 28-105mm f/3.5-4.5 USM, EF 135mm f/2.8 SoftFocus, and with my EF 50mm f/1.8 STM. However, my Canon...
